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- Title
Effect of Two Seeding Rates on Nitrogen Yield and Nitrogen Fixation of Winter and Spring Faba Bean.
- Authors
Neugschwandtner, Reinhard W.; Bernhuber, Alexander; Kammlander, Stefan; Wagentristl, Helmut; Klimek-Kopyra, Agnieszka; Lošák, Tomáš; Bernas, Jaroslav; Koppensteiner, Lukas J.; Zholamanov, Kuanysh K.; Ghorbani, Mohammad; Kaul, Hans-Peter
- Abstract
Faba bean (Vicia faba L. minor) is an important grain legume and is widely used as food and feed. It is traditionally used as a spring crop in Central European cropping systems. There is increasing interest in winter faba bean due to a higher yield potential, but limited knowledge of nitrogen (N) yields and nitrogen fixation (NFIX) exists. Therefore, the purpose of this study was to compare N concentrations, N yield of plant fractions, soil mineral N (SMN) and SMN sparing in the soil after harvest, NFIX and N balance of two winter faba bean varieties (Diva and Hiverna) to those of a spring faba bean (Alexia) using two seeding rates (25 versus 50 germinable seeds m−2) in a two-year field experiment under Pannonian climate conditions in eastern Austria. The winter faba bean varieties had higher N yields and NFIX, not only due to higher biomass yields, but also due to higher N concentrations and a higher percentage of N derived from atmosphere in the biomass. Conversely, the soil mineral N after harvest was lower compared to the spring faba bean. All treatments had a negative N balance due to higher grain N yield than NFIX. Winter faba beans left higher amounts of biologically-fixed N in residues for the subsequent crop, whereas spring faba bean left more SMN. Winter faba bean varieties obtained good results with both seeding rates, whereas the grain yield and the grain N yield of Alexia tended to higher with the higher seeding rate.
- Subjects
AUSTRIA; SPRING; NITROGEN fixation; FAVA bean; CROP residues; CROPPING systems; GRAIN yields
- Publication
Plants (2223-7747), 2023, Vol 12, Issue 8, p1711
- ISSN
2223-7747
- Publication type
Article
- DOI
10.3390/plants12081711